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Frost dates for Eureka, California

In a typical year, Eureka’s last spring frost lands around Feb 22 and the first fall frost around Dec 7, a growing season of about 288 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9b.

Right now the growing season is open, with about 43 days until the typical first fall frost.

Last spring frost and first fall frost odds for Eureka, California
OddsLast spring frostFirst fall frost
10 percentDec 31Nov 15
50 percentFeb 22Dec 7
90 percentMar 23Jan 11

A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.

Soil in Eureka is typically around 53°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Eureka

Timing comes from the same temperature engine the app uses, run against Eureka’s normals for today.

See the full what-to-plant lookup

Common questions

When is the last frost in Eureka, California?

Eureka’s last spring frost falls around February 22 in a typical year. One year in ten it is done by December 31, and one year in ten frost holds on until March 23. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Eureka?

The first fall frost arrives around December 7 in a typical year, as early as November 15 in an early year and as late as January 11 in a late one.

How long is the growing season in Eureka?

About 288 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Eureka in?

Eureka is in USDA hardiness zone 9b under the 2023 USDA Plant Hardiness Zone Map.

Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.

Nearby cities

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